AirHint found the following cheapest return flights from Montreal (YUL) to London (LGW) in July 2026 (see full year).

Return flights

01 Jul - 08 Jul	WestJet
01 Jul - 08 Jul	Air Transat	direct
02 Jul - 09 Jul	TAP
22 Jul - 28 Jul	WestJet
03 Jul - 10 Jul	TAP
06 Jul - 13 Jul	Air Transat	direct
14 Jul - 21 Jul	Air Transat	direct
05 Jul - 12 Jul	TAP
13 Jul - 20 Jul	TAP
12 Jul - 19 Jul	TAP
26 Jul - 02 Aug	TAP
27 Jul - 03 Aug	TAP
29 Jul - 05 Aug	TAP
30 Jul - 06 Aug	TAP
31 Jul - 07 Aug	TAP
28 Jul - 04 Aug	Air France
28 Jul - 04 Aug	Air Transat	direct
25 Jul - 01 Aug	Royal Air Maroc
31 Jul - 07 Aug	Air Transat	direct

Also check the deals for one-way flights from Montreal to London in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Montreal to London in July from $737

Return flights